The monolithic framework does not deflect under the effect of torque and external loads with effective results on sealing surfaces. The gearboxes of series RN, RO, RV
are manufactured of pressure die cast for the first 3 sizes and of cast iron for the others.

Shaft mount version, common to the three types, allows the flange mount B5 conversion by simply fitting one of the many output flanges available. Various dimensions and types of output shafts (hollow with throughout keyway, hollow with shrink disk and solid with single or double end) are available for the most cases of applications.
The series RN, RO, RV are made in 6 sizes for each type of gearboxes, 30 reduction ratios and output torques between 180 and 3200 Nm.